How to PROC PRINT only the sum of a column of data - sas

In SAS, you can use PROC PRINT to sum a column and display the sum:
proc print data = dataset.project_out;
sum variable;
run;
How can I get this function to only print the sum line and not the rest of the data?

I don't think you can do it with proc print. The closest you can come is the empty var statement:
proc print data=sashelp.class;
var ;
sum age;
run;
But sum adds the sum variable to the var list.
You can certainly accomplish this a number of other ways.
PROC SQL is the one I'd use:
proc sql;
select sum(Age) from sashelp.class;
quit;
PROC REPORT, often called "pretty PROC PRINT", can do it also:
proc report data=sashelp.class;
columns age;
define age/analysis sum;
run;
PROC TABULATE can do it:
proc tabulate data=sashelp.class;
var age;
tables age*sum;
run;
PROC MEANS:
proc means data=sashelp.class sum;
var age;
run;
Etc., plenty of ways to do the same thing.

Related

Weighted mean in SAS

I have problem with some SAS code. Within first weighted mean grouping by "date", I want to compute again weighted mean using "group" with by option and "w2" as weight. How can I do this?
proc univariate data=set_out;
by date;
weight w1;
VAR price;
run;
The weight statement accepts only one variable, so you will need to use UNIVARIATE twice:
proc sort data=have;
by date;
proc univariate data=have;
by date;
weight w1;
VAR price;
output out=want mean=mean_price;
run;
and
proc sort data=have;
by group;
proc univariate data=have;
by group;
weight w2;
VAR price;
output out=want mean=mean_price;
run;
If you don't want to sort the data use a CLASS statement instead of BY

How to filter a dataset according to its quantile

In the following code, how could I keep only the observations superior to the 95th quantile?
data test;
input business_ID $ count;
datalines;
'busi1' 2
'busi1' 10
'busi1' 4
'busi2' 1
'busi3' 2
'busi3' 1
;
run;
proc sort data = test;
by descending count;
run;
I don't know how to cleanly stock the quartile and then re-use it with an if condition.
Thanks
Edit : I can determine the quantile with this code :
proc means data=test noprint;
var count;
output out=quantile P75= / autoname;
run;
But how can I relate to it in the Test dataset so that I can select every observations above that quantile?
You could either read the value of the quantile in a macro variable to use in a subsequent if or where condition:
proc means data=test noprint;
var count;
output out=quantile P75= / autoname;
run;
data _null_;
set quantile;
call symput('quantile',count_p75);
run;
data test;
set test;
where count > &quantile.;
run;
or you could use an SQL subquery
proc means data=test noprint;
var count;
output out=quantile P75= / autoname;
run;
proc sql undo_policy=none;
create table test as
select *
from test
where count > (select count_p75 from quantile)
;
quit;
(Note that your question mentions the 95th quantile whereas your sample code mentions the 75th)
User2877959's solution is solid. Recently I did this with Proc Rank. The solution is a bit 'work around-y', but saves a lot of typing.
proc rank data=Input groups=1000 out=rank_out;
var var_to_rank;
ranks Rank_val;
run;
data seventy_five;
set rank_out;
if rank_val>750;
run;
More on Rank: http://documentation.sas.com/?docsetId=proc&docsetTarget=p0le3p5ngj1zlbn1mh3tistq9t76.htm&docsetVersion=9.4&locale=en

Using proc freq with repeated ID variables

I would like to use proq freq to count the number of food types that someone consumed on a specific day(fint variable). My data is in long format with repeated idno for the different food types and different number of interview dates. However SAS hangs and does not run the code. I have more than 300,000 datalines.Is there another way to do this?
proc freq;
tables idno*fint*foodtype / out=countft;
run;
I am a little unsure of your data structure, but proc means can also count.
Assuming that you have multiple dates for each person, and multiple food types for each date, you can use:
data dataset;
set dataset;
count=1;
run;
proc means data=dataset sum;
class idno fint foodtype;
var count;
output out=countft sum=counftpday;
run;
/* Usually you only want the lines with the largest _type_, so keep going here */
proc sql noprint;
select max(_type_) into :want from countft;
quit; /*This grabs the max _type_ from output file */
data countft;
set countft;
where _type_=&want.;
run;
Try a proc sql:
proc sql;
create table want as
select distinct idno, fint, foodtype, count(*) as count
from have
order by 1, 2, 3;
quit;
Worse case scenario, sort and count in a data step.
proc sort data=have;
by idno fint foodtype;
run;
data count;
set have;
by idno fint foodtype;
if first.foodtype then count=1;
else count+1;
if last.foodtype then output;
run;

Saving results from SAS proc freq with multiple tables

I'm a beginner in SAS and I have the following problem.
I need to calculate counts and percents of several variables (A B C) from one dataset and save the results to another dataset.
my code is:
proc freq data=mydata;
tables A B C / out=data_out ; run;
the result of the procedure for each variable appears in the SAS output window, but data_out contains the results only for the last variable. How to save them all in data_out?
Any help is appreciated.
ODS OUTPUT is your answer. You can't output directly using the OUT=, but you can output them like so:
ods output OneWayFreqs=freqs;
proc freq data=sashelp.class;
tables age height weight;
run;
ods output close;
OneWayFreqs is the one-way tables, (n>1)-way tables are CrossTabFreqs:
ods output CrossTabFreqs=freqs;
ods trace on;
proc freq data=sashelp.class;
tables age*height*weight;
run;
ods output close;
You can find out the correct name by running ods trace on; and then running your initial proc whatever (to the screen); it will tell you the names of the output in the log. (ods trace off; when you get tired of seeing it.)
Lots of good basic sas stuff to learn here
1) Run three proc freq statements (one for each variable a b c) with a different output dataset name so the datasets are not over written.
2) use a rename option on the out = statement to change the count and percent variables for when you combine the datasets
3) sort by category and merge all datasets together
(I'm assuming there are values that appear in in multiple variables, if not you could just stack the data sets)
data mydata;
input a $ b $ c$;
datalines;
r r g
g r b
b b r
r r r
g g b
b r r
;
run;
proc freq noprint data = mydata;
tables a / out = data_a
(rename = (a = category count = count_a percent = percent_a));
run;
proc freq noprint data = mydata;
tables b / out = data_b
(rename = (b = category count = count_b percent = percent_b));
run;
proc freq noprint data = mydata;
tables c / out = data_c
(rename = (c = category count = count_c percent = percent_c));
run;
proc sort data = data_a; by category; run;
proc sort data = data_b; by category; run;
proc sort data = data_c; by category; run;
data data_out;
merge data_a data_b data_c;
by category;
run;
As ever, there are lots of different ways of doing this sort of thing in SAS. Here are a couple of other options:
1. Use proc summary rather than proc freq:
proc summary data = sashelp.class;
class age height weight;
ways 1;
output out = freqs;
run;
2. Use multiple table statements in a single proc freq
This is more efficient than running 3 separate proc freq statements, as SAS only has to read the input dataset once rather than 3 times:
proc freq data = sashelp.class noprint;
table age /out = freq_age;
table height /out = freq_height;
table weight /out = freq_weight;
run;
data freqs;
informat age height weight count percent;
set freq_age freq_height freq_weight;
run;
This is a question I've dealt with many times and I WISH SAS had a better way of doing this.
My solution has been a macro that is generalized, provide your input data, your list of variables and the name of your output dataset. I take into consideration the format/type/label of the variable which you would have to do
Hope it helps:
https://gist.github.com/statgeek/c099e294e2a8c8b5580a
/*
Description: Creates a One-Way Freq table of variables including percent/count
Parameters:
dsetin - inputdataset
varlist - list of variables to be analyzed separated by spaces
dsetout - name of dataset to be created
Author: F.Khurshed
Date: November 2011
*/
%macro one_way_summary(dsetin, varlist, dsetout);
proc datasets nodetails nolist;
delete &dsetout;
quit;
*loop through variable list;
%let i=1;
%do %while (%scan(&varlist, &i, " ") ^=%str());
%let var=%scan(&varlist, &i, " ");
%put &i &var;
*Cross tab;
proc freq data=&dsetin noprint;
table &var/ out=temp1;
run;
*Get variable label as name;
data _null_;
set &dsetin (obs=1);
call symput('var_name', vlabel(&var.));
run;
%put &var_name;
*Add in Variable name and store the levels as a text field;
data temp2;
keep variable value count percent;
Variable = "&var_name";
set temp1;
value=input(&var, $50.);
percent=percent/100; * I like to store these as decimals instead of numbers;
format percent percent8.1;
drop &var.;
run;
%put &var_name;
*Append datasets;
proc append data=temp2 base=&dsetout force;
run;
/*drop temp tables so theres no accidents*/
proc datasets nodetails nolist;
delete temp1 temp2;
quit;
*Increment counter;
%let i=%eval(&i+1);
%end;
%mend;
%one_way_summary(sashelp.class, sex age, summary1);
proc report data=summary1 nowd;
column variable value count percent;
define variable/ order 'Variable';
define value / format=$8. 'Value';
define count/'N';
define percent/'Percentage %';
run;
EDIT (2022):
Better way of doing this is to use the ODS Tables:
/*This code is an example of how to generate a table with
Variable Name, Variable Value, Frequency, Percent, Cumulative Freq and Cum Pct
No macro's are required
Use Proc Freq to generate the list, list variables in a table statement if only specific variables are desired
Use ODS Table to capture the output and then format the output into a printable table.
*/
*Run frequency for tables;
ods table onewayfreqs=temp;
proc freq data=sashelp.class;
table sex age;
run;
*Format output;
data want;
length variable $32. variable_value $50.;
set temp;
Variable=scan(table, 2);
Variable_Value=strip(trim(vvaluex(variable)));
keep variable variable_value frequency percent cum:;
label variable='Variable'
variable_value='Variable Value';
run;
*Display;
proc print data=want(obs=20) label;
run;
The option STACKODS(OUTPUT) added to PROC MEANS in 9.3 makes this a much simpler task.
proc means data=have n nmiss stackods;
ods output summary=want;
run;
| Variable | N | NMiss |
| ------ | ----- | ----- |
| a | 4 | 3 |
| b | 7 | 0 |
| c | 6 | 1 |

Transpose output of PROC UNIVARIATE:TestsForLocation

I want to format the result of the following call to PROC UNIVARIATE (TestForLocation).
proc sort data=sashelp.class; by sex; run;
proc univariate data = sashelp.class mu0 = 1;
ods select TestsForLocation;
var age;
by sex;
ods output TestsForLocation=ttest;
run;
data ttest; set ttest; keep sex test stat pvalue;run;
proc print data=ttest;run;
How can I trasnpose the output into a datset with the following columns?
Obs, Sex, StudentsT_Stat, StudentsT_pValue, SignedRank_Stat, SignedRank_Pvalue
You need to double transpose here. Make a dataset with 12 observations, with four columns: Obs, Sex, ID being the combination of Test and (Stat|pValue) that you want as your eventual variable name, and Value being the value you want transposed into the variable. Then,
proc transpose data=ttest_double out=ttest_transposed;
by obs sex;
id ID;
var Value;
run;
(ID and Value can be any variable name you like.)